TA82 FW2.81 downgradable?

I recently got another psp in my hands. I found at a BK just sitting there, and no one around i figured it was a gift from karma or something well anyway its a TA82 and it has firmware 2.81 is there anyway i can downgrade this thing or upgrade then downgrade?

Yep, you can with the 3.03 downgrader.
You will need an original, unpatched, copy of GTA: Liberty City Stories (the one with the 2.0 update on the UMD) to perform the downgrade.

Just update to 3.03 with this, then downgrade with this.


Guide on doing it here.

dammit i need to get that game...